| 28601 | Swampfox Oilfield Services, LLC | | Oil & Gas Operator | Dec 2024 |
| 28602 | Swan Lake Properties, Inc. | | Oil Operator | Jul 1987 |
| 28603 | Swan Oil Co | Kellyville, OK 74039-5607 | Oil & Gas Operator | Dec 2023 |
| 28604 | Swan PC, LP | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2025 |
| 28605 | Swan Production Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2009 |
| 28606 | Swan Richard N | Claremore, OK 74018-0503 | Oil Operator | Aug 2013 |
| 28607 | Swander, Everett | Cunningham, KS 67035 | Oil Operator | May 1998 |
| 28608 | Swanhart Angelo & Deborah | Indiana, PA 15701-6301 | Gas Operator | Dec 2024 |
| 28609 | Swanner Properties | Wichita Falls, TX 76309 | Oil & Gas Operator | Dec 2025 |
| 28610 | Swanson & Vestal | Electra, TX 76360 | Oil & Gas Operator | Oct 1997 |
| 28611 | Swanson Douglas L & Sharon | Bartlesville, OK 74003-9319 | Oil Operator | Aug 2025 |
| 28612 | Swanson G T | Duncan, OK 73533 | Oil & Gas Operator | Nov 1998 |
| 28613 | Swanson Oil & Gas LLC | Williston, ND 58802 | Oil & Gas Operator | Oct 2025 |
| 28614 | Swanson Operating, Inc. | Holliday, TX 76366 | Oil Operator | Dec 2025 |
| 28615 | Swanson, Tom | Electra, TX 76360 | Oil & Gas Operator | Oct 2004 |
| 28616 | Swanson, Tommy Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Mar 2017 |
| 28617 | Swaringin, Howard Operating | Maryneal, TX 79535 | Oil & Gas Operator | May 2003 |
| 28618 | Swartout, John D & Sandra | Sherman, NY 14781 | Gas Operator | Dec 2024 |
| 28619 | Swartz Oil Company | San Angelo, TX 76906 | Oil & Gas Operator | Dec 2025 |
| 28620 | Swartz, Guy A. | San Angelo, TX 76904 | Oil & Gas Operator | Aug 1993 |
| 28621 | SWD Acidizing, Inc. | | Oil Operator | Feb 2014 |
| 28622 | SWD, Inc. | | Oil Operator | Jan 2025 |
| 28623 | Swearingen Robert E Dba Sabo Production | Seminole, OK 74868 | Oil & Gas Operator | Sep 2025 |
| 28624 | Sweet Crude Operating LLC | Brenham, TX 77834 | Oil & Gas Operator | Dec 2025 |
| 28625 | Sweet Texas T Energy LLC | Clyde, TX 79510 | Oil Operator | Dec 2025 |
| 28626 | Sweetwater Drilling Co., Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2025 |
| 28627 | Sweetwater Exploration LLC | Norman, OK 73069-5636 | Oil & Gas Operator | Oct 2025 |
| 28628 | Sweetwater Production, Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Dec 2025 |
| 28629 | Swenco-Western I | | Oil Operator | Sep 1987 |
| 28630 | Swenco-Western Inc | Houston, TX 77060 | Oil & Gas Operator | Jan 1997 |
| 28631 | Swenson Backhoe Service, Inc. | Electra, TX 76360 | Oil Operator | Dec 2025 |
| 28632 | Swenson, Clifford E. | Henrietta, TX 76365 | Oil & Gas Operator | Dec 2025 |
| 28633 | Swenton Michael J | Tulsa, OK 74105 | Oil & Gas Operator | Oct 2025 |
| 28634 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 28635 | Swepi LP And Miller Brothers | | Oil & Gas Operator | Oct 1992 |
| 28636 | Swepi/Western Division | Houston, TX 77210 | Oil & Gas Operator | Aug 1984 |
| 28637 | Swevco-Sabw LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 28638 | Swiess & Thomas | San Antonio, TX 78247 | Oil Operator | Dec 2025 |
| 28639 | Swift A W & Company Inc | Sand Springs, OK 74063-5124 | Oil Operator | Jun 2003 |
| 28640 | Swift Energy Com | | Oil & Gas Operator | Sep 1995 |
| 28641 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
| 28642 | Swift Energy Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | Jun 2017 |
| 28643 | Swinea Well Service Inc | Drumright, OK 74030 | Oil & Gas Operator | Mar 2015 |
| 28644 | Swingle Drilling Inc | Crooksville, OH 43731 | Oil & Gas Operator | Dec 2024 |
| 28645 | Swinkwood Oil Co | | Oil Operator | Apr 2015 |
| 28646 | SWJN Oil Company | Kilgore, TX 75663 | Oil Operator | Dec 2025 |
| 28647 | SWN Production (Louisiana), LLC | | Oil & Gas Operator | Dec 2024 |
| 28648 | SWN Production (Ohio), LLC | Morgantown, WV 26508 | Oil & Gas Operator | Mar 2024 |
| 28649 | SWN Production Company, LLC | Spring, TX 77391 | Oil & Gas Operator | Oct 2025 |
| 28650 | SWN Production LLC | Spring, TX 77389-4954 | Oil & Gas Operator | Feb 2022 |
| 28651 | Swo & Ism, LLC | | Oil & Gas Operator | Dec 2021 |
| 28652 | Swope Corp. | Austin, TX 78735 | Oil & Gas Operator | Dec 2025 |
| 28653 | Swordfish Energy Operating, LLC | Houston, TX 77060 | Oil & Gas Operator | Dec 2025 |
| 28654 | SWS | Humble, TX 77338 | Oil Operator | Dec 2025 |
| 28655 | SWS Operating LLC | Lawton, OK 73501-3236 | Oil Operator | Sep 2024 |
| 28656 | SWV Energy Operating LLC | Spring, TX 77379 | Gas Operator | Dec 2018 |
| 28657 | SX54, LLC | Sheridan, WY 82801 | Oil Operator | Nov 2017 |
| 28658 | Sycamore Development Partners LLC | | Oil & Gas Operator | Nov 2025 |
| 28659 | Sydri Operating, LLC | Dallas, TX 75231 | Oil & Gas Operator | Dec 2025 |
| 28660 | Sydson D'Oro Exploration Co. | Houston, TX 77079 | Oil & Gas Operator | Jan 1992 |
| 28661 | Sydson Energy, Inc. | Houston, TX 77027 | Oil & Gas Operator | Dec 2025 |
| 28662 | Syj Oil & Gas | San Antonio, TX 78209 | Oil Operator | Sep 2000 |
| 28663 | Syj Oil & Gas, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2025 |
| 28664 | Sylvan Energy, LLC | Pittsburgh, PA 15211 | Oil & Gas Operator | Dec 2025 |
| 28665 | Sylvan Oil Operating Company | Tulsa, OK 74103-3516 | Oil & Gas Operator | Apr 2016 |
| 28666 | Sylves Robert J | New Florence, PA 15944-7950 | Gas Operator | Dec 2016 |
| 28667 | Sylvite Corp | Tulsa, OK 741363908 | Oil & Gas Operator | Dec 2000 |
| 28668 | Symank, Steve | Olney, TX 76374 | Oil & Gas Operator | Dec 2025 |
| 28669 | Symba American Oil, Inc | Houston, TX 77056 | Oil Operator | Dec 2025 |
| 28670 | Synd Enterprises Inc | Lakewood, NY 14750-9613 | Oil & Gas Operator | Dec 2006 |
| 28671 | Syndex Resources, Inc. | Wellesley, MA 02181-000 | Oil & Gas Operator | Dec 2021 |
| 28672 | Synergex Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Sep 2025 |
| 28673 | Synergy Development Corp | | Oil Operator | Apr 2011 |
| 28674 | Synergy Offshore LLC | Houston, TX 77024 | Oil & Gas Operator | Feb 2022 |
| 28675 | Synergy Oil & Gas LLC | | Oil & Gas Operator | Oct 2025 |
| 28676 | Synergy Oil & Gas, Inc. | Houston, TX 77024 | Oil & Gas Operator | Nov 2019 |
| 28677 | Synergy Oil & Gas, Inc. (A) | Houston, TX 77024 | Oil & Gas Operator | Aug 2001 |
| 28678 | Synergy Oil & Gas, L.P. | Houston, TX 77024 | Oil & Gas Operator | May 2012 |
| 28679 | Synergy Operating Co., LLC | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 28680 | Synergy Operating LLC | Farmington, NM 87499 | Oil & Gas Operator | Jul 2024 |
| 28681 | Synergy Production Company | Houston, TX 77024 | Oil & Gas Operator | Jan 1996 |
| 28682 | Synergy Resources | Artesia, NM 88210 | Oil & Gas Operator | Jan 2015 |
| 28683 | Syntax Energy Corporation | Denton, TX 76210 | Oil Operator | Dec 2025 |
| 28684 | Synthetic Energy Corporation | Houston, TX 77006 | Oil Operator | Dec 2025 |
| 28685 | Szumigala, Edward R. & Ruth A. | Dunkirk, NY 14048 | Gas Operator | Dec 2024 |
| 28686 | T & A Resources LLC | Salyersville, KY 41465 | Oil Operator | Dec 2023 |
| 28687 | T & B Drilling, Inc | Columbia, KY 42728 | Oil Operator | Dec 2023 |
| 28688 | T & B Oil Company Inc | Ardmore, OK 73401-3709 | Oil & Gas Operator | Apr 2015 |
| 28689 | T & B Resources | | Oil & Gas Operator | Jul 1990 |
| 28690 | T & C MFG. & Operating, Inc. | Great Bend, KS 67530 | Oil Operator | May 2022 |
| 28691 | T & C Oil, Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2024 |
| 28692 | T & D Oil | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 28693 | T & D Oil Co. | Victoria, KS 67671 | Oil Operator | Apr 1996 |
| 28694 | T & D Oil Compan | | Oil Operator | Jan 1992 |
| 28695 | T & D Oil LLC (Osage Only) | | Oil & Gas Operator | Sep 2025 |
| 28696 | T & F Exploration, LP | Pittsburgh, PA 15241-1375 | Oil & Gas Operator | Oct 2025 |
| 28697 | T & F Oil Company | | Oil Operator | Jan 2025 |
| 28698 | T & F Oil Company, LLC | | Oil Operator | Oct 2011 |
| 28699 | T & G Energy LLC | Dallas, TX 75230 | Oil Operator | Nov 2010 |
| 28700 | T & G Holding LLC | Pauls Valley, OK 73075-8663 | Oil & Gas Operator | Mar 2015 |